We currently get red bits from ctx->DrawBuffer->Visual.redBits
by making a false assumption that the texture we're writing to
(in glCopyTexImage2D()) is used as a DrawBuffer.
Fixes many failures in gles3 Khronos CTS test:
copy_tex_image_conversions_required
Cc: <mesa-sta...@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.pho...@gmail.com>
---
src/mesa/drivers/common/meta.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index 28bd065..ba84eb8 100644
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -2722,6 +2722,7 @@ static GLenum
get_temp_image_type(struct gl_context *ctx, mesa_format format)
{
GLenum baseFormat = _mesa_get_format_base_format(format);
+ GLint format_red_bits = _mesa_get_format_bits(format, GL_RED_BITS);
switch (baseFormat) {
case GL_RGBA:
@@ -2732,9 +2733,9 @@ get_temp_image_type(struct gl_context *ctx, mesa_format
format)
case GL_LUMINANCE:
case GL_LUMINANCE_ALPHA:
case GL_INTENSITY:
- if (ctx->DrawBuffer->Visual.redBits <= 8) {
+ if (format_red_bits <= 8) {
return GL_UNSIGNED_BYTE;
- } else if (ctx->DrawBuffer->Visual.redBits <= 16) {
+ } else if (format_red_bits <= 16) {
return GL_UNSIGNED_SHORT;
} else {
GLenum datatype = _mesa_get_format_datatype(format);
--
1.9.3
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